I will appreciate if someone can offer a solution to this problem. We have a very strange situation with our current E2k cluster production.

When the cluster and exhange services are running on NODE A, Outlook works fine. However as long as the services are ALL running on NODE B, outlook clients can't open their messages.

The error they get is

"can't open item"

We are currently planning to migrate to E2k7, however in the iterim we will like to correct this unstable situation where almost every week the cluster fails over to NODE B which gives the error above.